Improvement in derrick



Q est @dmail ese/w @titille J. B. DRAKE AN D WILLIAM H. HUTSON,MONTOURSVILLE, PENNSYLVANIA, ASSIGN- ORS TO THEMSELVES AND J. SILL, OFSAIWE PLAGE.

Letters Patent No. 83,938llated November 10, 1868.

IMPROVEMENT IN DnRRIcK The Schedule referred to in these Letters Patentand making part of the same.

To all whom it may concern:

.Be it known that we J. B. Dnnkn and WILLIAM H. HUTSON, ofMontoursville, in the county of Lycoming, and State of Pennsylvania,have invented a new and improved Derrick for Stacking Hay; andv we dohereby declare that the following is a full, clear, and exactdescriptionof the construction and operation ofthe saine, referencebeing hadto the accompanying drawings, making a part of thisspeciiicamon, in which- Figure 1 is a side elevation, and

Figure 2, a horizontal section through line .fc :t of

fig. 1.

The object of this invention is to'provide a light, cheap, andconvenient portable dei-rick for elevating and stacking hay, which, whenused in combination with a horse hay-fork, or otherequivalent device,will raise the hay from-the load, convey it to the proper position, anddrop it upon the stack, and will then automaticallyreturn the hay-forkto the load to receive another burden.

In the drawings, A is a frame or base, composed of severalcross-timbers, resting upon and in any suitable manner attached to acouple of runners, B B, shaped like sled-runners, so that the device canreadily be drawn or otherwise conveyed iiom place to place. A mast, C,steps in the centre of the middle cross-beam, and is confined inposition by four, more or less, stays, c c c c, as shown in thedrawings, the stays being hinged or jointed to the mast in any suitablemanner at their upper ends, and hooking to the frame A at their lowerends, so that they can be readily detached from the base when it isdesired to unstep the mast.

D'is an arm, provided with a brace, (l, and connecting-rod, d', andattached to the mast by rings or masthoops, E E, aiixed to the end ofthe arm and the i brace, and so constructed and operating that, whilethe crane thus formed can be raised or lowered and swung around to anyrequired position, its upper arm D always remains horizontal.

A rod, F, is attached to the upper part of the mast, g

switchfwill cause it to swing around horizontally to any position thatmay be required for' unloading or loading the hay-fork. Y

jA block or tackle, G, attached to the upper end -of the mast, another,H, at the lower end, and a third or a common sheave or pulley, I, at theouter end of the arm D. A rope, J, extends through the lower block,thence up the mast and through the upper block,

and thence down to a point, m, where it divides, one portion, j, passingover the sheave I, and down to the hay-fork, the other, j', extendingback to the inner f tially as described.

end of the arm D, and voperating as a halyard for hoistingand loweringthe crane.

These two parts, j and j, are made of such a length that when the'poweris applied to the lower end of the rope J, it irst raises the hay-forkwith its load of hay to a certain point, or until the part j becomesverti cal, Vthe point' m haxdng passed nearly to, or ,quite through, theblockG, and then, operating by means of the part j', it raises the cranevertically, together with the hay-fork. As the crane thus rises, itswings around upon the guide F to the proper position, in the mannerabove explained. When unloaded, the crane is lowered, and automaticallyreturns to its original position. In consequence of the ,arm D alwaysbeingin a horizontal position, the hay is always held at a distance fromthe mast, so as to be out of the way, whereby it can be handled muchmore convem'ently than by any device heretofore employed.

It is evident that a stop can be provided to hold the crane at any pointof elevation, and aI trigger, or other equivalent arrangement, can -beused for the purpose of automatically disengaging'the hay from the forkat any point, and could be made adjustable so as to operate at differentpoints, as might be desired. It is further evident that thishoisting-device can be employed to great advantage' in loading andunloading vessels, for raising and lowering merchandise in stores andelsewhere, and generally for every kind of work where articles of novery great weight are to be raised and lowered.

Having thus described our invention,

What we claim as new, and desire to secure by Letters Patent, is-r l.The guide E, in combination with the arm D and the hoisting-device, whenoperating substantiallyas set forth.

2. The combination of the rope J, having the two,

parts j j, with the crane D, when operating substan- 3. The arrangementof the sled-shaped base A with the above-described derrick,substantially as and for the purpose set forth.

4. The combina-tion and arrangement of the sled A,

'mast O, crane D, rope J, jj', guide F, pulleys G H I,

and braces c c c, substantially as shown and described. To the abovespecication of our invention, we have signed our hands, this 6th 'day ofJuly, 1868.

J. B. DRAKE. WM. H. HUTSON. Witnesses to J. B. BRAKE:

G. W. Onoexnn, CEAS. A. PETrr-r. Witnesses to W. H. Hu'rsonY z.

Lnvr Connu, Oms. A Pn'rcrir.

